| 摘要 |
PROBLEM TO BE SOLVED: To provide an earmold transceiver with a transmission function (a microphone function) excellent in SN characteristics regardless of ambient noise, since a conventional earmold transceiver has small noise-reduction effects due to external noise and lacks clearness. SOLUTION: In the earmold transceiver, a sound mike also used as a receiver and a noise collection mike are stored inside an earmold which is provided with an external-ear-canal insertion part or a part covering an external-ear-canal opening part and whose inside is filled with a silicon resin or the like. A noise component is suppressed by mixing signals of both mikes so as to extract a sound signal with a high SN ratio. A wireless communication device is composed by using such a transceiver. COPYRIGHT: (C)2008,JPO&INPIT
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